Pellets valorization of waste biomass harvested by coagulation of freshwater algae

Cancela, Ángeles; Sánchez, Ángel; Álvarez, Xana; Jiménez, Alejandro Miranda; Ortiz, Luis; Valero, Enrique; Varela, Paloma

doi:10.1016/j.biortech.2016.01.002

Cited by 19 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biomass pellets (BP) are used in combustion engineering due to its higher density and combustion efficiency than that of biomass feedstock [1]. Wood fuel is the main source of raw material for the production of biomass pellets.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis on the co-combustion of biomass pellets with lignite and bituminous coal

Guo

Hassanpour

et al. 2020

Energy

View full text Add to dashboard Cite

This work presents comparative study on the combustion of biomass pellets (BP) with Bituminous coal (BC), and Xiao longtan lignite (XL) using thermogravimetric (TG) analysis. The results show that the combustion process of BP:BC can be divided into the release and combustion of volatile compounds, oxidation of BP char and combustion of BC char. Whilethere are two stages for the blend of XL and BP, which are the combustion of volatile compounds and the char burning of BP and XL. With increasing BP ratio, the maximum combustion rate and combustion index increase, while the burnout temperature decreases, indicating the combustion performance of coal can be improved. In addition, interactions between BP and XL are more significant than that of BP and BC. The maximum deviations are found to be 30% BP with BC and 10% BP with XL. Reaction mechanisms are analysed using Coats-Redfern method. The first order model is found to be suitable for the first stage of biomass burn (stage 1) and coal combustion of BC:BP blends. Diffusion controlled model D3 and D4 are the most effective for the second stage of biomass burn and XL combustion, respectively. The minimum activation energies of biomass blending is obtained with a BP ratio of 30% for BC and 10% for XL.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis on the co-combustion of biomass pellets with lignite and bituminous coal

Guo

Hassanpour

et al. 2020

Energy

View full text Add to dashboard Cite

show abstract

“…After bead formation, the trapped algal species have exposure to surrounding and can use light and carbon dioxide for growth in the presence of nutrients as growth medium. Cancela et al (2016) has reported coagulation of algal culture using calcium chloride, sodium alginate and tannins of Eucalyptus globulus bark but not for isolation of different strains from mix culture [10]. In addition to this, the calcium is a component of algal medium and may not have any inhibiting effect at appropriate concentration.…”

Section: Resultsmentioning

confidence: 99%

A new method to isolate algal species from mix algal culture

Ali

2017

Preprint

View full text Add to dashboard Cite

11To meet the issues of energy and environment, algae cultivation for biofuel and CO 2 sequestration is getting popular 12 at the global level. Specific algal strains have been identified for production of biofuel, biomolecules and biomass. 13To start algae cultivation at lab or industrial scale, it is requirement to have isolated and identified algal culture for 14 targeted products. Water sample for algae from aquatic system is usually consist of mix culture of algae and need to 15 be processed for targeted isolated algal strains using reported techniques like streaking, spraying, serial dilution, and 16 single-cell isolations. But none of these techniques is considered as efficient or popular except streaking on agar 17 plate which involves a set of microbial techniques and may take months to make isolation properly. Here, a new 18 method is proposed to make alginic acid solution using aquatic sample followed by pouring it in calcium chloride 19 solution drop by drop which makes the beads with single or more algal species trapped in each bead. The trapped 20 algal species in the beads are grown in 96 wells plate having single bead in each well with standard medium leading 21 to microscopic verification of the isolated algal species to process further. A mix culture from a lake was subjected 22 to isolation using proposed method and excellent results were obtained in one week duration. 23 24 25 26 27 131 sterilization, subsequent dilutions, extensive centrifugation, instrumentation etc. The proposed technique is simple 132 and can give accurate outcomes for isolation of algal strains from mix culture.133 4. Conclusion 134

show abstract

“…In particular, galacturonic acid has negatively charged COO– groups or residues, which are responsible for generating repulsion with the –COOH groups of alginic acid (Soto-Ramírez et al 2021 ). Additionally, at pH below 7.0 ± 0.2, this polymer does not efficiently coagulate microalgae because acidic functional groups that interfere with electrostatic attraction predominate (Cancela et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Use of biochar and a post-coagulation effluent as an adsorbent of malachite green, beneficial bacteria carrier, and seedling substrate for plants belonging to the poaceae family

Plaza-Rojas,

Amaya-Orozco,

Rivera-Hoyos

et al. 2023

3 Biotech

View full text Add to dashboard Cite

Wastewater treatment plants produce solid and semi-solid sludge, which treatment minimises secondary environmental pollution because of wastewater treatment and obtaining new bioproducts. For this reason, in this paper, the co-pyrolysis of biogenic biomasses recovered from a biological reactor with immobilised fungal and bacterial biomass and a tertiary reactor with Chlorella sp. used for dye-contaminated wastewater treatment was carried out. Biogenic biomasses mixed with pine bark allowed the production and characterisation of two types of biochar. The raw material and biochar were on the “in vitro” germination of Lolium sp. seeds, followed by adsorption studies for malachite green (MG) dye using the raw material and the biochar. Results showed that using 60 mg L−1 of a cationic coagulant at pH 6.5 allowed for the recovery of more than 90% of the microalgae after 50 min of processing. Two biochar resulted: BC300, at pH 5.08 ± 0.08 and BC500, at pH 6.78 ± 0.01. The raw material and both biochars were co-inoculated with growth-promoting bacteria; their viabilities ranged from 1.7 × 106 ± 1.0 × 101 to 7.5 × 108 ± 6.0 × 102 CFU g−1 for total heterotrophic, nitrogen-fixing and phosphate-solubilising bacteria. Re-use tests on Lolium sp. seed germination showed that with the post-coagulation effluent, the germination was 100%, while with the biochar, with and without beneficial bacteria, the germination was 98 and 99%, respectively. Finally, BC500 adsorbed the highest percentage of malachite green at pH 4.0, obtaining qecal values of 0.5249 mg g−1 (R2: 0.9875) with the pseudo-second-order model.

show abstract

Pellets valorization of waste biomass harvested by coagulation of freshwater algae

Cited by 19 publications

References 20 publications

Thermogravimetric analysis on the co-combustion of biomass pellets with lignite and bituminous coal

Thermogravimetric analysis on the co-combustion of biomass pellets with lignite and bituminous coal

A new method to isolate algal species from mix algal culture

Use of biochar and a post-coagulation effluent as an adsorbent of malachite green, beneficial bacteria carrier, and seedling substrate for plants belonging to the poaceae family

Contact Info

Product

Resources

About